Powder River Basin

1 · Fringe vs core / carrier-bed landing

Turner (and Parkman/Teapot) laterals land in thin, heterolithic, often low-contrast carrier-bed and halo facies where cutoffs fail. Exit pay into muddy bioturbated fringe → wasted lateral feet, weak EUR (estimated ultimate recovery), and stages that “frac harder” cannot fix. Walk continuous vs dying packages before you pick the bench.

2 · Isolated sandstone enigmas

Shannon and Sussex bodies change fast along strike. Wrong genetic model → wrong continuity story → wrong well count and completion. Outcrop shows the lateral death you cannot see in a type well.

3 · Frontier remnants

Synsedimentary tectonics and transgressive ravinement leave top-truncated Wall Creek / Frontier remnants — not continuous sheets. Mis-map a remnant as a continuous lowstand and laterals drill off the preserved thick.

4 · Parent–child & stacked benches

Parkman–Niobrara–Turner–Mowry columns under one lease amplify interference when fractures and faults are ignored. Shared geo/eng model on outcrop beats denser spacing alone.

5 · Niobrara ≠ Mowry

Two source / hybrid systems with different sedimentology, composition, and drill–complete issues. Treating them as one shale play is how sweet spots become money-disposal areas.

Who this is for now

Asset and delineation teams working today’s stacked PRB oil story (and companies hunting global analogs to isolated shelf sands and hybrid source-rock plays) — not a legacy CBM (coalbed methane) field trip.

Earned on the run-of-show

• Geology (50%) — Spine already earned: Shannon/Sussex/Parkman/Teapot/Turner/Frontier facies plus Niobrara & Mowry petroleum systems; fringe vs core; synsedimentary tectonics; Goldilocks RQ/diagenesis.
• Engineering (15%) — Outline already forces landing TVD, fringe-vs-core carrier-bed decisions, and plan-of-depletion / well-placement talk on outcrop (Day 1 reservoir-eng field talk; Day 5 shared geo–eng model). Split from Completions: this wedge is landing / placement / POD only.
• Completions (10%) — Named LOs already require completion design and parent–child: Day 3 Niobrara ≠ Mowry drill/complete matrix (landing/fluid/proppant/spacing recipes) and Day 5 parent/child stacked-bench interference. Facies-tied stage/frac choices are core buyer pain, not padding.

Makeable (provisional)

• Geophysics (10% provisional) — Outline has trend analysis + Day-5 subsurface exercise only — not enough alone for sparse-data / seismic-resolution claims. Isolated Shannon/Sussex bodies and fracture/fault hooks justify GP once framed at seismic scale.
• Geothermal (5% provisional) — PRB is a documented low-T / localized-anomaly province (Salt Creek–Meadow Creek heat gradients; wellbore repurpose / direct-use literature). Real adjacency — not in N463 spine until a named module exists. Not a geothermal school.
• carbon capture and storage (CCS) (5% provisional) — Genuine PRB CO2 geology: Wyoming CarbonSAFE / Dry Fork Class VI hub (ready, not commercial ops) vs Salt Creek CO2-EOR/ROZ in Frontier–Wall Creek since ~2003. Facies/seal/ROZ questions already on outcrop — geoscience fractions only if contrast module is taught; no invented CarbonSAFE field stop.
• saltwater disposal (SWD) (5% provisional) — PRB has real produced-water disposal/reuse geology (CBNG legacy + modern Hz oil water; Tallgrass Water Western midstream; saline Class II receivers). Facies → injectivity / thief zones / pressure management is transferable from outcrop architecture — only with a named short module; no invented Class II pad tour.

Omitted (no public fraction)

• Land — Stacked benches 'under one lease' appear as parent–child engineering/completions context, not acreage/lease/unit decision teaching. Do not invent a landman module from spacing language.

Laboratory

The Powder River Basin exposes Upper Cretaceous tight-oil sandstones — Shannon, Sussex, Parkman, Teapot, Turner, Frontier — plus Niobrara and Mowry source / hybrid systems at walkable scale for stacked-bench development and transferable analogs.

Method

Each field day opens with a short conceptual lecture, then six-hour outcrop work aimed at one prediction or completion problem. Exclusive GFS drone models extend the same faces beyond the roadcut. Geo and eng stay in one conversation so you do not frack past geology.

Sunday · Arrive

Casper reception and Powder River petroleum-system overview — stacked benches, source rocks, and why geo/eng share one model.

Monday · Niobrara + upper Mesaverde

Niobrara marls; Teapot and Parkman shoreface–deltaic successions, unconformity and valley fill — landing and eng issues on outcrop (outcomes 1 & 5).

Tuesday · Isolated shelf sands

Shannon and Sussex body variability in Frontier / Mowry / Niobrara economic context — enigmatic isolated reservoirs and lateral change (outcome 2).

Wednesday · Mowry + Frontier

Frontier, Niobrara, and Mowry contrast — different reservoir behavior means different drill and complete choices (outcomes 3 & 5).

Thursday · Eastern margin day trip

Casper out-and-back toward Douglas / Redbird facies change — where to drill and how to complete as systems change basinward (outcomes 3 & 5). Return to Casper; no Newcastle overnight.

Friday · Turner + wrap

Turner complexity, Mowry/Niobrara ties, trend analysis / basinal transport, and a subsurface exercise that locks the shared geo/eng story (outcomes 1 & 4).